Well it has been a painful few weeks with this modem/router. High pings, disconnects and down load speeds all over the place. Turns out the dsl chipset in this is mediatek which is not very good when paired up with ECI fibre cabinets which is what I'm connected to in the street. There are many lengthy posts on various other forums including Asus.

If you are connected to a ECI cabinet these have lantiq (intel) chipsets in them so you are better off trying to find a modem/router that has a lantiq dsl chipset and you will get better speeds and a solid connection. Netgear do one of these, the D7800 it is suppose to be a very good unit. I have managed to buy a second hand one off fleabay so hoping this will be a good buy and will be with me next week.

I'm hoping that I can take the Asus back and get a full refund.